Source : Webster's Revised Unabridged Dictionary (1913)

Upokororo \U`po*ko*ro"ro\, n. [From the native Maori name.]
   (Zo["o]l.)
   An edible fresh-water New Zealand fish ({Prototroctes
   oxyrhynchus}) of the family {Haplochitonid[ae]}. In general
   appearance and habits, it resembles the northern lake
   whitefishes and trout. Called also {grayling}.